Home / 30,841.09-42,561.53-18,737.45

Finding the Fourth Proportional to 30,841.09, 42,561.53 and 18,737.45

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Solution

The fourth proportional to 30,841.09, 42,561.53 and 18,737.45 is: 25,858.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,841.09 : 42,561.53 = 18,737.45 : x
  2. Step 2: Convert to fraction form
    30,841.09/42,561.53 = 18,737.45/x
  3. Step 3: Cross multiply
    30,841.09x = 42,561.53 × 18,737.45
  4. Step 4: Simplify right side
    30,841.09x = 797,494,540.30
  5. Step 5: Solve for x
    x = 797,494,540.30/30,841.09
  6. Step 6: Final answer
    x = 25,858.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.